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Michelle Henley, MLS San Francisco General Hospital Bethany Myers, MLIS UCLA Louise M. Darling Biomedical Library.

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Presentation on theme: "Michelle Henley, MLS San Francisco General Hospital Bethany Myers, MLIS UCLA Louise M. Darling Biomedical Library."— Presentation transcript:

1 Michelle Henley, MLS UCSF @ San Francisco General Hospital Bethany Myers, MLIS UCLA Louise M. Darling Biomedical Library

2 A review of a clearly formulated question that uses systematic and explicit methods to identify, select and critically appraise relevant research, and to collect and analyse data from the studies that are included in the review.* May include statistical methods (meta-analysis) to analyze and summarize results of the included studies. Limiting bias is key to selection and assessment of studies. * http://www.cochrane.org/faq/generalhttp://www.cochrane.org/faq/general

3 Literature (aka narrative) reviews usually lack systematic search protocols or criteria for selection and appraisal of studies. They may be helpful to obtain a broad perspective on a topic, but there is typically no attempt to limit bias. Articles cited may be biased towards the author’s viewpoint.

4 Petticrew M. Systematic reviews from astronomy to zoology: myths and misconceptions. BMJ. 2001 Jan 13;322(7278):98-101.

5 Key to evidence-based processes With RCTs, highest level of evidence in healthcare Reliably measure benefits/harms associated with treatment options (aka comparative effectiveness)

6 1. Assess need, assemble team 2. Create the review protocol 3. Conduct the review 4. Update review as needed

7 1. Assess need, assemble team ◦ Search for existing systematic reviews ◦ Scoping review search 2. Create the review protocol ◦ Assist in formation/revision of search question ◦ Help with clarification or definitions of concepts ◦ Assist with preliminary search strategy

8 3. Conduct the review ◦ Write methods section (search strategy, execution) ◦ Document, save search strategies/details 4. Update review as needed ◦ Rerun search for review update

9 Who: librarians! What: overview of the process of systematic reviews Where: University of Pittsburgh, Falk Library When: Offered three times a year: April, July, November* Why: gives context to the role of expert searcher as part of the research team * Presenters attended July and November 2014, respectively

10 Introduction Study design ◦ Levels of evidence ◦ Basic study designs: observational and experimental Librarian authorship ◦ IOM Standards for Systematic Reviews Reference interview Other types of reviews Reporting bias

11 Choosing databases ◦ And when to stop! Harvesting search terms ◦ Keywords ◦ Controlled vocabulary words Methodology filters (hedges) Grey literature ◦ e.g., registered trials, conference proceedings, dissertations & theses, white papers, reports

12 Hand searching ◦ Manually browsing topical journals Data management ◦ For the investigator ◦ For the librarian Search delivery ◦ Saved search, citation manager file, spreadsheet… Writing the methods section ◦ PRISMA

13 How to get started and work with researchers Importance of reference interview Practical term harvesting Importance of testing each component of a large search Hedges Self-confidence

14 Lack of understanding of systematic reviews Explaining sensitivity vs specificity ◦ i.e., why are you giving me so many citations? Convincing to include other databases/grey lit Dealing with an often sporadic process

15 Systematic reviews take a LONG time to complete ◦ e.g., Cochrane reviews can take 1 year+ Good communication is essential ◦ Set expectations early on time, deliverables ◦ Don’t be afraid to ask for authorship! Document, document, document ◦ Search details, results, progress notes ◦ Must be reproducible

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